Motor module

ABSTRACT

A motor module includes a bearing housing having a loading base, an electric unit, a bearing, and a magnetic rotor unit disposed on the bearing. In addition, a protruding portion is extending from the loading base, and the electric unit includes a printed circuit board (PCB) and sensing elements, wherein the PCB is utilized for disposing the loading base thereon. Moreover, signal circuits and motor windings are formed on the PCB around the loading base, the sensing elements are disposed around the motor windings, and the bearing is disposed at the protruding portion. Besides, the magnetic rotor unit is disposed on the motor windings, keeping a gap with the PCB; therefore, when electric current passes the motor windings, the magnetic rotor unit and the motor windings generate a flux linkage induction, so as to drive the magnetic rotor unit to rotate relative to the PCB.

This application claims the benefit of Taiwan Patent Application No.095148056, filed on Dec. 20, 2006, Taiwan Patent Application No.095148054, filed on Dec. 20, 2006, Taiwan Patent Application No.096101001, filed on Jan. 10, 2007, and Taiwan Patent Application No.096101000, filed on Jan. 10, 2007, which are hereby incorporated byreference for all purposes as if fully set forth herein.

BACKGROUND OF THE INVENTION

1. Field of Invention

The present invention relates to a motor module, and more particularly,to a modular and miniature assembly motor.

2. Related Art

Miniature motor modules in current practice include a motor system and acircuit board for driving. In most of the miniature motor modules, themotor system is firstly assembled; then, signal lines and power linespre-installed inside the motor system are pulled out to connect with thecircuit board, so as to drive the motor system of the miniature motormodule to operate; therefore, parts to be driven can be driven by themotor system.

However, volumes of the above-mentioned miniature motor modules may notbe miniaturized because their motor system is too complex. As shown inFIG. 1, it is a conventional motor system P10. The motor system P10 isinduced by magnetic flux in radial directions generated by means of thestator winding P11 and the rotor magnetic P12 to rotate. And most of thestator windings P11 are produced by the way of mechanical automation;hence, how precision of the mechanical automation affects the rate ofslots to be occupied by coils of the motor windings. In addition, a lotof conductive magnet plates have to be used; however, poor rotationefficiency of the motor system P10 may still occur because of effects ofunsmooth operation or large cogging torque. Besides, if the rate ofslots to be occupied by coils of the motor windings is too high, thethickness of the whole motor system P10 will be increased, so that thepurpose of the miniaturization may not be achieved.

Therefore, the components of the above-mentioned motor system P10 wouldnot be easily reduced, so that the difficulty for assembly is increasedand the mechanical automation for assembling is also hard to be applied.Besides, there is also a problem when the motor system P10 is connectedto the driving circuits of the circuit board for driving in finalassembly stage; therefore, the space size of the motor becomes harder tobe reduced.

From above facts, currently there exist problems that the motor systemP10 of the miniature motor module and the circuit board for driving areunable to be implemented as a modular design. This will also affectassembly of the miniature motor modules. Therefore, it can be seen thatthe miniature motor modules is still unable to achieve simplificationand compactness, and the problems are needed to be overcome.

SUMMARY OF THE INVENTION

In view of the above, one object of the present invention is to providea motor module, which is used to overcome the assembly problems for thecircuits of circuit board and the motor system.

According to one aspect of the present invention, a motor module isprovided. The motor module comprises a bearing housing having a loadingbase and a protruding portion, an electric unit, a bearing disposed onthe bearing housing, and a magnetic rotor unit stackedly disposed on thebearing. The electric unit comprises a printed circuit board (PCB) and aplurality of sensing elements, wherein the PCB is utilized for disposingthe loading base thereon. In addition, by means of wirings, signalcircuits and motor windings are formed on the PCB, where is around thedisposed loading base, and the sensing elements are disposed around themotor windings. In addition, the magnetic rotor unit is stackedlydisposed not only on the bearing but also on the motor windings, keepinga gap with the PCB; therefore, when electric current passes the motorwindings, the motor windings and the magnetic rotor unit generate a fluxlinkage induction, so as to drive the magnetic rotor unit to rotaterelative to the PCB.

For solving the above mentioned problems, another aspect of the presentinvention is to provide a motor module. The motor module comprises abearing housing having a loading base and a protruding portion, anelectric unit with PCB, a bearing disposed at the bearing housing, and amagnetic rotor unit stackedly disposed on the bearing. The PCB isutilized for disposing the loading base thereon. In addition, by meansof wirings, signal circuits and motor windings are formed on the PCB,where is around the disposed loading base, wherein a sensorless controlIC is disposed on the signal circuits. In addition, the magnetic rotorunit is stackedly disposed not only on the bearing but also on the motorwindings, keeping a gap with the PCB; therefore, when electric currentpasses the motor windings, the motor windings and the magnetic rotorunit generate a flux linkage induction, so as to drive the magneticrotor unit to rotate relative to the PCB.

The present invention can provide the advantages and effects asdescribed below.

By implementation of the present invention, because a semiconductorwiring process is adopted for the wirings of the electric unit, thesignal circuits and the motor windings are formed at the same time, sothat the volume and the thickness in the axis direction of the wires ofthe whole motor windings wouldn't be increased, that is suitable forsimplifying and minimizing structure of motor modules. Besides, becausethe signal circuits and the motor windings are integrately designed,they can be formed on the PCB at the same time; therefore, the yieldrate of the wires of the motor winding can be effectively improved.Also, because it adopts a semiconductor process, it can be combined tothe current circuit board manufacturing processes. Moreover, because theelectric unit and the magnetic rotor unit are designed as individualmodules, the components of motor can be effectively reduced, so as toimprove the assembly rate of motor and achieve the purpose of reducingmotor volume.

Further scope of applicability of the present invention will becomeapparent from the detailed description given hereinafter. However, itshould be understood that the detailed description and specificexamples, while indicating preferred embodiments of the invention, aregiven by way of illustration only, since various changes andmodifications within the spirit and scope of the invention will become,apparent to those skilled in the art from this detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become more fully understood from thedetailed description given herein below for illustration only, and whichthus is not limitative of the present invention, and wherein:

FIG. 1 is a schematic view of a conventional motor system;

FIG. 2A is an exploded view of a motor module of a first embodiment inthe present invention;

FIG. 2B is a 3D sectional view of a motor module of the first embodimentin the present invention;

FIG. 2C is a sectional view of a motor module of the first embodiment inthe present invention;

FIG. 3A is a first profile of a motor module of a second embodiment inthe present invention;

FIG. 3B is a second profile of a motor module of the second embodimentin the present invention;

FIG. 4 is a sectional view of a motor module of a third embodiment inthe present invention;

FIG. 5 is a sectional view of a motor module of a fourth embodiment inthe present invention;

FIG. 6 is a sectional view of a motor module of a fifth embodiment inthe present invention;

FIG. 7 is a sectional view of a motor module of a sixth embodiment inthe present invention;

FIG. 8 is a sectional view of a motor module of a seventh embodiment inthe present invention;

FIG. 9 is a partial sectional view of a motor module of an eighthembodiment in the present invention;

FIG. 10 is a sectional view of a motor module of a ninth embodiment inthe present invention;

FIG. 11 is a sectional view of a motor module of a tenth embodiment inthe present invention;

FIG. 12A is an exploded view of a motor module of an eleventh embodimentin the present invention;

FIG. 12B is a sectional view of the motor module of the eleventhembodiment in the present invention;

FIG. 13A is a sectional view of the motor module of a twelfth embodimentin the present invention;

FIG. 13B is a sectional view of the motor module of a thirteenthembodiment in the present invention;

FIG. 14 is a sectional view of the motor module of a fourteenthembodiment in the present invention;

FIG. 15 is a sectional view of the motor module of a fifteenthembodiment in the present invention;

FIG. 16A is a sectional view of the motor module of a sixteenthembodiment in the present invention;

FIG. 16B is a sectional view of the motor module of a seventeenthembodiment in the present invention;

FIG. 17A is a sectional view of the motor module of an eighteenthembodiment in the present invention;

FIG. 17B is a sectional view of the motor module of a nineteenthembodiment in the present invention;

FIG. 18A is a sectional view of the motor module of a twentiethembodiment in the present invention;

FIG. 18B is a sectional view of the motor module of a twenty-firstembodiment in the present invention;

FIG. 19A is a partial sectional view of the motor module of atwenty-second embodiment in the present invention;

FIG. 19B is a sectional view of the motor module of a twenty-thirdembodiment in the present invention;

FIG. 20A is a sectional view of the motor module of a twenty-fourthembodiment in the present invention;

FIG. 20B is a sectional view of the motor module of a twenty-fifthembodiment in the present invention;

FIG. 21A is a sectional view of the motor module of a twenty-sixthembodiment in the present invention;

FIG. 21B is a sectional view of the motor module of a twenty-seventhembodiment in the present invention; and

FIG. 22 is a sectional view of the motor module of a twenty-eighthembodiment in the present invention.

DETAILED DESCRIPTION OF THE INVENTION

The contents of the present invention are described in details throughspecific embodiments with reference to the figures. The referencenumerals mentioned in the specification correspond to equivalentreference numerals in the figures.

As shown in FIGS. 2A and 2B, a motor module 10 a of a first embodimentin the present invention comprises a bearing housing 11 a, an electricunit 12 a, a bearing 13, and a magnetic rotor unit 14. The bearinghousing 11 a has a loading base 111, and a protruding portion 112 isextending from one end of the loading base 11. In the FIGS of theembodiment, the diameter of the loading base 111 is larger than that ofthe protruding portion 112. However, in other practices, the diameter ofthe loading base 111 may equal to or smaller than that of the protrudingportion 112. Also, the electric unit 12 a includes a PCB 121 a and aplurality of sensing elements 122. The aforesaid loading base 111 isdisposed on the PCB 121 a. In addition, by means of wirings, signalcircuits 124 and motor windings 125 are formed on the PCB 121 a, whereis around the disposed loading base 111. And the aforesaid plurality ofsensing elements 122 is disposed around the motor windings 125.

Referring to FIGS. 2A, 2B, and 2C, the bearing 13 is sleeved into outersurface of the protruding portion 112 of the bearing housing 11 a, sothat it can be stackedly disposed on the loading base 111. The bearing13 is, but not limit to, Ball bearing, Hydrodynamic bearing, or Sleevebearing. Moreover, the magnetic rotor unit 14 is stackedly disposed notonly on the bearing 13 but also on the motor windings 125, keeping a gapS with the PCB. After the motor module 10 a is assembled, when electriccurrent passes the motor windings 125 of the electric unit 12 a, themotor windings 125 and the magnetic rotor unit 14 generate a fluxlinkage induction, so as to drive the magnetic rotor unit 14 to rotaterelative to the PCB 121 a, and output power. Concretely speaking, themagnetic rotor unit 14 comprises an upper lid 141 and a permanentmagnetic ring 142. The permanent magnetic ring 142 is disposed in theupper lid 141, and the upper lid 141 is stackedly disposed on thebearing 13, making the permanent magnetic ring 142 keep the gap Srelative to the motor windings 125. Therefore, when electric currentpasses the motor windings 125 of the electric unit 12 a, the motorwindings 125 and the permanent magnetic ring 142 generate a flux linkageinduction, so as to drive the magnetic rotor unit 14 to rotate.

The aforesaid upper lid 141 has a ring wall 1411, and the upper lid 141is partitioned by the ring wall 1411 into a first covering area C1 and asecond covering area C2. And the permanent magnetic ring 142 is disposedin the first covering area C1, and the second covering area C2 covers onthe bearing 13. In addition, the upper lid 141 has an opening 143relative to top of the protruding portion 112 of the bearing housing 11a.

The plurality of sensing elements 122 of the electric unit 12 a is aHall element, and number of the Hall element is determined by number ofphase of power of the motor module 10 a. In this embodiment, the motormodule 10 a is a three-phase motor, so that three Hall elements are usedto form an electric angle of 120° between phases, disposed around themotor windings 125. Therefore, when the magnetic rotor unit 14 isrotating, it can be sensed by the Hall elements, and the power-on-stateof the motor windings 125 can be switched by the motor module, so as tomaintain the generated flux linkage induction between the motor windings125 and the magnetic rotor unit 14 and drive the magnetic rotor unit 14to continually rotate.

In addition, there is another profile of the motor module in the firstembodiment. Here, the motor windings 125 of the aforesaid electric unit12 a are adapted to act as sensing element 122. Then a sensing signalsensed by the motor windings 125 is transmitted to a sensorless controlIC (not shown) of a PCB 121 a. Therefore, when the magnetic rotor unit14 is rotating, the power-on-state of the motor windings 125 can beswitched, so as to maintain the generated flux linkage induction betweenthe motor windings 125 and the magnetic rotor unit 14 and drive themagnetic rotor unit 14 to continually rotate.

The wiring method of the PCB 121 a for forming the signal circuits 124and the motor winding 125 is a semiconductor wiring method. The wiringmethod is selected from a group comprising a screen printing method, aphotolithography method, an ink-jet printing method, an imprintingprinting, an electro forming method, or any method combination thereof.Besides, the motor windings 125 have multiple layers of wires.

Referring to FIG. 3A, in the motor module 10 a of the first embodiment,the PCB 121 b of the electric unit 12 b further has a through hole 1211,so that the loading base 111 can be disposed in the through hole 1211and combined to the PCB 121 b, so as to constitute a motor module of asecond embodiment of the present invention. And another profile of themotor module 10 b of the second embodiment can further include a bottomplate 20 to carry the PCB 121 b, so as to constitute the motor module 10c as shown in FIG. 3B.

Referring to FIG. 4, the motor module 10 a in the first embodimentfurther has a bottom plate 20, to carry the PCB 121 b and constitute themotor module 10 d of a third embodiment of the present invention.

Referring to FIG. 5, it is a motor module 10 e of a fourth embodiment ofthe present invention, wherein the bottom plate 20 has a punch hole 21,where is corresponding to the through hole 1211 of the PCB 121 b. Oneend of the loading base 111 has a mounting portion 114 extendedtherefrom. That is, the bearing housing 11 e further includes a mountingportion 114. Therefore, by inserting the mounting portion 114 into thepunch hole 21 of the bottom plate 20, the bearing housing 11 e can beinserted into the through hole 1211 of the PCB 121 b and stackedlydisposed on the bottom plate 20. Besides, because the loading base 111is disposed on the through hole 1211, it can be combined to the PCB 121b.

Referring to FIG. 6, the magnetic rotor unit 14 of the motor module 10 aof the first embodiment can be disposed with a carrier 15. In theembodiment, the carrier 15 is disposed on the upper lid 141, and thecarrier 15 can be used to carry an optical disk, which is the motormodule 10 f a fifth embodiment of the present invention.

Referring to FIG. 7, the magnetic rotor unit 14 of the motor module 10 aof the first embodiment can be disposed with a group of blades 16. Inthe embodiment, the blades 16 are disposed on the upper lid 141, so asto constitute a motor module 10 g with micro fan of a sixth embodimentof the present invention.

Referring to FIG. 8, the magnetic rotor unit 14 of the motor module 10 aof the first embodiment can be disposed with a gear 17 a. In theembodiment, the gear 17 a is disposed on the upper lid 141, and the gear17 a can cooperate with a gear 17 b to constitute a motor module 10 hwith gear set of a seventh embodiment of the present invention, whereinthe gear 17 b further has a spindle 171 for outputting power.

Referring to FIG. 9, the magnetic rotor unit 14 of the motor module 10 aof the first embodiment can be disposed with a plurality of pump vanes18. In the embodiment, the pump vanes 18 are disposed on the upper lid141, so as to constitute a motor module 10 i with flow distributionfunction of an eighth embodiment of the present invention.

Referring to FIG. 10, the magnetic rotor unit 14 of the motor module 10a of the first embodiment can be disposed with an eccentric wheel 19. Inthe embodiment, the eccentric wheel 19 is disposed on the upper lid 141.And because the magnetic rotor unit 14 drives the eccentric wheel 19 torotate, they can constitute a motor module 10 j with vibration functionof a ninth embodiment of the present invention.

Referring to FIG. 11, the magnetic rotor unit 14 of the motor module 10a of the first embodiment can be disposed with a driving device 31. Inthe embodiment, the driving device 31 is disposed on the upper lid 141,and the driving device 31 can assembly with an auto focus module 32. Thedriving device 31 can be driven by connecting with the magnetic rotorunit 14, and the driving method can be achieved by means of threadgroove, gear structure, or cam structure, so that the auto focus module32 can expand and contract. That is, the auto focus module 32 comprisinga lens barrel 321, an actuator 322, and a lens 323 can be driven toexpand and contract to achieve focus. Therefore, a motor module 10 kwith auto focus function of a tenth embodiment can be constituted by themagnetic rotor unit 14 driving the drive device 31 to control the autofocus module 32.

Except the motor module 10 a of the first embodiment can be taken asvaried application examples, the motor modules of the second embodimentto the fourth embodiment can also be configured in the same way as thatof the first embodiment in practice.

Referring to FIGS. 12A and 12B, in the motor module of the presentinvention, the motor module 410 a in an eleventh embodiment comprises abearing housing 411 a, a hole 412, an electric unit 413, a bearing 414,and a magnetic rotor unit 415. The bearing housing 411 a has a loadingbase 4111, and one end of the loading base 4111 has a protruding portion4112. In the FIGS of the embodiment, the diameter of the loading base4111 is larger than that of the protruding portion 4112. However, inother practices, the diameter of the loading base 4111 may equal to orsmaller than that of the protruding portion 4112. Besides, the hole 412penetrates the entire protruding portion 4112, and extends and passesthrough the loading base 4111 for disposing the bearing 414 therein. Inother applications, the hole 412 may be a step-shaped hole, andpenetrates the entire protruding portion 4112 and the loading base 4111for disposing the bearing 414 therein. Moreover, the electric unit 413comprises a PCB 4131 and a plurality of sensing elements. The aforesaidbearing housing 411 a is stackedly disposed on the PCB 4131, wherein bymeans of wirings, signal circuits 4134 and motor windings 4135 areformed on the PCB 4131, where is around the disposed bearing housing 411a, and the sensing elements 4132 are disposed around the motor windings4135 of the PCB 4131.

Referring to FIGS. 12A and 12B again, the bearing 414 is inserted intothe hole 412 passing through the entire protruding portion 4112 andloading base 4111. The bearing 414 is, but not limit to, Ball bearing,Hydrodynamic bearing, or Sleeve bearing. Moreover, the magnetic rotorunit 415 is stackedly disposed not only on the loading base 4111 butalso on the motor windings 4135, keeping a gap 4S with the PCB 4131.After the motor module 410 a is assembled, when electric current passesthe motor windings 4135 of the electric unit 413, the motor windings4135 and the magnetic rotor unit 415 generate a flux linkage induction,so as to drive the magnetic rotor unit 415 to rotate relative to the PCB4131, and output power. Concretely speaking, the magnetic rotor unit 415comprises an upper lid 4151 and a permanent magnetic ring 4152. Thepermanent magnetic ring 4152 is disposed in the upper lid 4151, and theupper lid 4151 further includes a core axis 4153. The core axis 4153 isdisposed in the bearing 414, making the permanent magnetic ring 4152keep the gap 4S relative to the motor windings 4135. Therefore, whenelectric current passes the motor windings 4135 of the electric unit413, the motor windings 4135 and the permanent magnetic ring 4152generate a flux linkage induction, so as to drive the magnetic rotorunit 415 to rotate, and the core axis 4153 moves together.

The aforesaid upper lid 4151 has a ring wall 41511, and the upper lid4151 is partitioned by the ring wall 41511 into a third covering area4C1 and a fourth covering area 4C2. And the permanent magnetic ring 4152is disposed in the third covering area 4C1, and the fourth covering area4C2 covers on the protruding portion 4112 of the bearing housing 411 a.

The plurality of sensing elements 4132 of the electric unit 413 is aHall element, and number of the Hall element is determined by number ofphase of power of the motor module 410 a. In this embodiment, the motormodule 410 a is a three-phase motor, so that three Hall elements areused to form an electric angle of 120° between phases, disposed aroundthe motor windings 4135. Therefore, when the magnetic rotor unit 415 isrotating, it can be sensed by the Hall elements, and the power-on-stateof the motor windings 4135 can be switched by the motor module, so as tomaintain the generated flux linkage induction between the motor windings4135 and the magnetic rotor unit 415 and drive the magnetic rotor unit415 to continually rotate.

In addition, there is another profile of the motor module 410 a in theeleventh embodiment. Here, the motor windings 4135 of the aforesaidelectric unit 413 are adapted to act as sensing element. Then a sensingsignal sensed by the motor windings 4135 is transmitted to a sensorlesscontrol IC (not shown) of a PCB 4131. Therefore, when the magnetic rotorunit 415 is rotating, the power-on-state of the motor windings 4135 canbe switched, so as to maintain the generated flux linkage inductionbetween the motor windings 4135 and the magnetic rotor unit 415 anddrive the magnetic rotor unit 415 to continually rotate.

The wiring method of the PCB 4131 for forming the signal circuits 4134and the motor winding 4135 is a semiconductor wiring method. The wiringmethod is selected from a group comprising a screen printing method, aphotolithography method, an ink-jet printing method, an imprintingprinting, an electro forming method, or any method combination thereof.Besides, the motor windings 4135 have multiple layers of wires.

Referring to FIG. 13A, in the motor module 410 a of the eleventhembodiment, the PCB 4131 further has a through hole 4136, so that theloading base 4111 can be disposed in the through hole 4136 and combinedto the PCB 4131, so as to constitute a motor module 410 b of a twelfthembodiment of the present invention. And another profile of the motormodule 410 c is that the PCB 4131 can further include a bottom plate420, so as to constitute the motor module 410 c of the thirteenthembodiment.

Referring to FIG. 14, the motor module 410 a in the eleventh embodimentfurther has a bottom plate 420, to carry the PCB 4131 and constitute themotor module 410 d of a fourteenth embodiment of the present invention.

Referring to FIG. 15, in the motor module 410 c of the thirteenthembodiment, one end of the loading base 4111 has at least one mountingportion 4113 extended therefrom, and the bottom plate 420 furtherincludes a punch hole 421 corresponding to the mounting portion 4113.Therefore, by inserting the mounting portion 4113 into the punch hole421, the bearing housing 411 b can be inserted into the through hole4136 of the PCB 4131, so that the loading base 4111 can be stackedlydisposed on the bottom plate 420 and combined to the PCB 4131. And thebearing housing 411 b is mounted to the bottom plate 420, so as toconstitute a motor module 410 e of a fifteenth embodiment of the presentinvention.

Referring to FIG. 16A, the magnetic rotor unit 415 of the motor module410 a of the eleventh embodiment can be disposed with a carrier 416, sothat the carrier 416 can be used to carry an optical disk, which is amotor module 410 f of a sixteenth embodiment of the present invention.Or, referring to FIG. 16B, a carrier 416 is disposed on the core axis4153 for carrying an optical disk, so as to constitute a motor module410 g of a seventeenth embodiment of the present invention.

Referring to FIG. 17A, the magnetic rotor unit 415 of the motor module410 a of the eleventh embodiment can be disposed with a group of blades417, so as to constitute a motor module 410 h with micro fan of aneighteenth embodiment of the present invention. Or, referring to FIG.17B, a group of blades 417 is disposed on the core axis 4153, so as toconstitute a motor module 410 i with micro fan of a nineteenthembodiment of the present invention.

Referring to FIG. 18, the magnetic rotor unit 415 of the motor module410 a of the eleventh embodiment can be disposed with a gear 418 a, andthe gear 418 a can cooperate with another gear 418 b to constitute amotor module 410 j with gear set of a twentieth embodiment of thepresent invention, wherein the gear 418 b further has a spindle 4181 foroutputting power. Or, referring to FIG. 18B, a gear 418 a is disposed onthe core axis 4153, and cooperated with another gear 418 b, so as toconstitute a motor module 410 k with gear set of a twenty-firstembodiment of the present invention, wherein the gear 418 b further hasa spindle 4181 for outputting power.

Referring to FIG. 19A, the magnetic rotor unit 415 of the motor module410 a of the eleventh embodiment can be disposed with a plurality ofpump vanes 419, so as to constitute a motor module 410 m with flowdistribution function of a twenty-second embodiment of the presentinvention. Or, referring to FIG. 19B, a plurality of pump vanes 419 isdisposed on the core axis 4153, so as to constitute a motor module 410 nwith flow distribution function of a twenty-third embodiment of thepresent invention.

Referring to FIG. 20A, the magnetic rotor unit 415 of the motor module410 a of the eleventh embodiment can be disposed with an eccentric wheel431. And because the magnetic rotor unit 415 drives the eccentric wheel431 to rotate, they can constitute a motor module 410 p with vibrationfunction of a twenty-fourth embodiment of the present invention. Or,referring to FIG. 20B, an eccentric wheel 431 is disposed on the coreaxis 4153, so as to constitute a motor module 410 q with flowdistribution function of a twenty-fifth embodiment of the presentinvention.

Referring to FIG. 21A, the magnetic rotor unit 415 of the motor module410 a of the eleventh embodiment can be disposed with a driving device432, and the driving device 432 can assembly with an auto focus module433. The driving device 432 can be driven by connecting with themagnetic rotor unit 415, and the driving method can be achieved by meansof thread groove, gear structure, or cam structure, so that the autofocus module 433 can expand and contract. That is, the auto focus module433 comprising a lens barrel 4331, an actuator 4332, and a lens 4333 canbe driven to expand and contract to achieve focus. Therefore, a motormodule 410 r with auto focus function of a twenty-sixth embodiment canbe constituted by the magnetic rotor unit 415 driving the drive device432 to control the auto focus module 433. Or, referring to FIG. 21B, adriving device 432 is disposed on the core axis 4153, so as toconstitute a motor module 410 s with auto focus function of atwenty-seventh embodiment

Except the motor module 410 a of the eleventh embodiment can be taken asvaried application examples, the motor modules of the twelfth embodimentto the fifteenth embodiment can also be configured in the same way asthat of the eleventh embodiment in practice.

In addition, referring to FIG. 22, in this embodiment, the core axis4153 further can be a detachable core axis, and a carrier 416 is alsodisposed on the core axis 4153. Therefore, the motor module 410 t of atwenty-eighth embodiment can be used to carry an optical disk and issimilar to that in the seventeenth embodiment. Of cause, the core axis4153 in rests of the embodiments can also be a detachable core axis.

The invention being thus described, it will be obvious that the same maybe varied in many ways. Such variations are not to be regarded as adeparture from the spirit and scope of the invention, and all suchmodifications as would be obvious to one skilled in the art are intendedto be included within the scope of the following claims.

1. A motor module, comprising: a bearing housing, having a loading baseand a protruding portion being extending from one end of the loadingbase; an electric unit, having a printed circuit board (PCB) and aplurality of sensing elements, the loading base being disposed on thePCB, and by means of wirings, signal circuits and motor windings beingformed on the PCB, where being around the disposed loading base, and thesensing elements being disposed around the motor windings of the PCB; abearing, being disposed at the protruding portion; and a magnetic rotorunit, being disposed not only on the bearing but also on the motorwindings, keeping a gap with the PCB, when electric current passing themotor windings of the electric unit, the motor windings and the magneticrotor unit generating a flux linkage induction, so as to drive themagnetic rotor unit to rotate relative to the PCB.
 2. The motor moduleas claimed in claim 1, wherein the magnetic rotor unit comprises anupper lid and a permanent magnetic ring, the permanent magnetic ringbeing disposed in the upper lid, and the upper lid being stackedlydisposed on the bearing, making the permanent magnetic ring keep a gaprelative to the motor windings, when electric current passing the motorwindings of the electric unit, the motor windings and the permanentmagnetic ring generating a flux linkage induction, so as to drive themagnetic rotor unit to rotate.
 3. The motor module as claimed in claim1, wherein the bearing is sleeved into outer surface of the protrudingportion.
 4. The motor module as claimed in claim 3, wherein the upperlid has a ring wall, the upper lid being partitioned by the ring wallinto a first covering area and a second covering area, the permanentmagnetic ring being disposed in the first covering area, and the secondcovering area covering on the bearing.
 5. The motor module as claimed inclaim 4, wherein the upper lid has an opening relative to top of theprotruding portion of the bearing housing.
 6. The motor module asclaimed in claim 1, wherein the plurality of sensing elements of theelectric unit is a Hall element, the Hall elements being used to form anelectric angle of 120° between phases, disposed around the motorwindings for sensing rotating of the magnetic rotor unit, so as switchpower-on-state of the motor windings.
 7. The motor module as claimed inclaim 1, wherein the wiring means is selected from a group comprising ascreen printing method, a photolithography method, a ink-jet printingmethod, an imprinting printing, an electro forming method, or any methodcombination thereof, to form the motor windings having multiple layersof wires.
 8. The motor module as claimed in claim 1, wherein the bearingis a ball bearing, a hydrodynamic bearing, or a sleeve bearing.
 9. Themotor module as claimed in claim 1, wherein the PCB has a through holefor disposing the loading base therein, so that the loading base can becombined to the PCB.
 10. The motor module as claimed in claim 1, whereinthe motor module further includes a bottom plate for carrying the PCB.11. The motor module as claimed in claim 9, wherein the PCB is disposedon a bottom plate.
 12. The motor module as claimed in claim 10, whereinthe bottom plate has a punch hole, a through hole corresponding thepunch hole is disposed on the PCB, and a mounting portion is extendingfrom one end of the loading base, the through hole being used fordisposing the loading base therein, so that the loading base beingcombined to the PCB, the mounting portion being inserted into the punchhole, so that the loading base being disposed on the bottom plate. 13.The motor module as claimed in claim 1, wherein the magnetic rotor unitis disposed with a carrier.
 14. The motor module as claimed in claim 2,wherein the upper lid is disposed with a carrier.
 15. The motor moduleas claimed in claim 1, wherein the magnetic rotor unit is disposed witha group of blades.
 16. The motor module as claimed in claim 2, whereinthe upper lid is disposed with a group of blades.
 17. The motor moduleas claimed in claim 1, wherein the magnetic rotor unit is disposed witha gear.
 18. The motor module as claimed in claim 2, wherein the upperlid is disposed with a gear.
 19. The motor module as claimed in claim 1,wherein the magnetic rotor unit is disposed with a plurality of pumpvanes.
 20. The motor module as claimed in claim 2, wherein the upper lidis disposed with a plurality of pump vanes.
 21. The motor module asclaimed in claim 1, wherein the magnetic rotor unit is disposed with aneccentric wheel.
 22. The motor module as claimed in claim 2, wherein theupper lid is disposed with an eccentric wheel.
 23. The motor module asclaimed in claim 1, wherein the magnetic rotor unit is disposed with adriving device.
 24. The motor module as claimed in claim 2, wherein theupper lid is disposed with a driving device.
 25. The motor module asclaimed in claim 1, wherein the protruding portion is disposed with ahole for disposing the bearing therein.
 26. The motor module as claimedin claim 25, wherein the magnetic rotor unit comprises an upper lid anda permanent magnetic ring, the permanent magnetic ring being disposed inthe upper lid and the upper lid having a core axis, the core axis beingdisposed in the bearing, making the permanent magnetic ring keep a gaprelative to the motor windings, when electric current passing the motorwindings of the electric unit, the motor windings and the permanentmagnetic ring generating a flux linkage induction, so as to drive themagnetic rotor unit to rotate.
 27. The motor module as claimed in claim26, wherein the upper lid has a ring wall, the upper lid beingpartitioned by the ring wall into a third covering area and a fourthcovering area, the permanent magnetic ring being disposed in the thirdcovering area, and the fourth covering area covering on the protrudingportion of the bearing housing.
 28. The motor module as claimed in claim26, wherein the core axis is disposed with a carrier.
 29. The motormodule as claimed in claim 26, wherein the core axis is disposed with agroup of blades.
 30. The motor module as claimed in claim 26, whereinthe core axis is disposed with a gear.
 31. The motor module as claimedin claim 26, wherein the core axis is disposed with a plurality of pumpvanes.
 32. The motor module as claimed in claim 26, wherein the coreaxis is disposed with an eccentric wheel.
 33. The motor module asclaimed in claim 26, wherein the core axis is disposed with a drivingdevice.
 34. A motor module, comprising: a bearing housing, having aloading base and a protruding portion being extending from one end ofthe loading base, an electric unit, having a printed circuit board(PCB), the loading base being disposed on the PCB, and by means ofwirings, signal circuits and motor windings being formed on the PCB,where being around the disposed loading base, and the signal circuitshaving a sensorless control IC; a bearing, being disposed at theprotruding portion; and a magnetic rotor unit, being disposed not onlyon the bearing but also on the motor windings, keeping a gap with thePCB, when electric current passing the motor windings of the electricunit, the motor windings and the magnetic rotor unit generating a fluxlinkage induction, so as to drive the magnetic rotor unit to rotaterelative to the PCB.
 35. The motor module as claimed in claim 34,wherein the bearing is sleeved into outer surface of the protrudingportion.
 36. The motor module as claimed in claim 35, wherein the PCBhas a through hole for disposing the loading base therein, so that theloading base can be combined to the PCB.
 37. The motor module as claimedin claim 35, wherein the motor module further includes a bottom platefor carrying the PCB.
 38. The motor module as claimed in claim 37,wherein the bottom plate has a punch hole, a through hole correspondingthe punch hole is disposed on the PCB, and a mounting portion isextending from one end of the loading base, the through hole being usedfor disposing the loading base therein, so that the loading base beingcombined to the PCB, the mounting portion being inserted into the punchhole, so that the bearing housing being disposed on the bottom plate.39. The motor module as claimed in claim 25, wherein the protrudingportion has a hole for disposing the bearing therein.
 40. The motormodule as claimed in claim 39, wherein the PCB has a through hole fordisposing the loading base therein, so that the loading base can becombined to the PCB.
 41. The motor module as claimed in claim 40,wherein the motor module further includes a bottom plate for carryingthe PCB, the loading base being stackedly disposed on the bottom plate.42. The motor module as claimed in claim 39, wherein the motor modulefurther includes a bottom plate for carrying the PCB.
 43. The motormodule as claimed in claim 42, wherein a through hole is disposed on thePCB, a mounting portion is extending from one end of the loading base,and a punch hole corresponding to the mounting portion is disposed onthe bottom plate, the mounting portion being inserted into the punchhole, so as to mount the bearing house to the bottom plate, and theloading portion is disposed in the through hole of the PCB, so that theloading base can be combined to the PCB.